Retry for reattempting in Ruby - Mini Project: Build & Apply

Retry for Reattempting in Ruby

📖 Scenario: Imagine you have a simple task that might fail sometimes, like trying to connect to a website. You want to try again if it fails, but only a few times.

🎯 Goal: You will write a Ruby program that tries to perform a task and uses retry to attempt it again if it fails, up to a limit.

📋 What You'll Learn

Create a variable called attempts to count tries

Create a variable called max_attempts set to 3

Write a begin block with a simulated failure using raise

Use rescue to catch the error and use retry to try again

Print a success message if the task succeeds

💡 Why This Matters

🌍 Real World

Retrying is useful when working with unreliable tasks like network requests or reading files, where temporary failures happen.

💼 Career

Understanding retry logic helps in writing robust programs that handle errors gracefully and improve user experience.

1

Set up the attempt counter

Create a variable called attempts and set it to 0.

Ruby

# Create a variable called attempts and set it to 0
# Your code here

Need a hint?

Use = to assign 0 to attempts.

2

Set the maximum number of attempts

Create a variable called max_attempts and set it to 3.

Ruby

attempts = 0
# Create a variable called max_attempts and set it to 3
# Your code here

Need a hint?

Use = to assign 3 to max_attempts.

3

Write the retry logic with begin-rescue

Write a begin block that increases attempts by 1, then raises an exception if attempts is less than max_attempts. Use rescue to catch the exception, print "Attempt failed", and use retry to try again.

Ruby

attempts = 0
max_attempts = 3
# Write a begin block that increments attempts and raises an error if attempts < max_attempts
# Rescue the error, print "Attempt failed", and retry
# Your code here

Need a hint?

Use begin and rescue to handle errors. Increase attempts inside begin. Use raise to simulate failure. Use retry inside rescue to try again.

4

Print success message after retries

After the begin-rescue-end block, write puts "Task succeeded on attempt #{attempts}" to print a success message showing the attempt number.

Ruby

attempts = 0
max_attempts = 3
begin
  attempts += 1
  raise "Fail" if attempts < max_attempts
rescue
  puts "Attempt failed"
  retry
end
# Print success message showing the attempt number
# Your code here

Need a hint?

Use puts with an f-string style #{} to show the attempt number.